The Jews are specially tasked with evangelizing the world during the Tribulation. There will be lots of non-Jews who will testify that The Christ has come and taken away the born from above. These will give up their lives for this belief and they show up in Heaven at the wedding as guests, whose garments are ‘washed white as snow in the blood of the lamb’. But the Jews are specifically named during the Tribulation as His witnesses. Whereas in the Church Age there is no differentiating between Jews and Gentiles.
Where are you getting it's just the Jews doing this?